{"apiVersion":"1.0","identifier":"CVE-2026-66797","description":"Improper access control in CloudStack-s annotation functionality allows unauthorized comment creation and disclosure. The addAnnotation and listAnnotation APIs perform an ownership check when an entity-s UUID is specified, but fail to honor its result correctly. This lets any authenticated user write annotations to, and disclose existing annotations/comments on, an entity they don-t own by simply supplying its UUID. This issue affects Apache CloudStack: from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","publishedAt":"2026-08-21T09:16:40","lastModifiedAt":"2026-08-27T20:02:47","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66797","cvssScore":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","epssProbability":0.00263,"riskScore":0.55,"affectedProduct":"Apache CloudStack","affectedVersions":">=4.15.0.0,<4.20.3.1,>=4.21.0.0,<4.22.1.1","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-66797","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-66797","en":"https://www.redsauce.net/en/cves/CVE-2026-66797","fr":"https://www.redsauce.net/fr/cves/CVE-2026-66797","pt":"https://www.redsauce.net/pt/cves/CVE-2026-66797","de":"https://www.redsauce.net/de/cves/CVE-2026-66797","sk":"https://www.redsauce.net/sk/cves/CVE-2026-66797","el":"https://www.redsauce.net/el/cves/CVE-2026-66797"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-66797"}}